WO2007129171A2

WO2007129171A2 - Multiblade safety razor

Info

Publication number: WO2007129171A2
Application number: PCT/IB2007/001086
Authority: WO
Inventors: Marco Rigat
Original assignee: Marco Rigat
Priority date: 2006-04-28
Filing date: 2007-04-20
Publication date: 2007-11-15
Also published as: WO2007129171A3; ITTO20060315A1

Abstract

Multiblade security provided wi th a handle (3), a connecting joint (5) which is arranged at one end of the handle (3), and en inter-changeable cartridge (6), which is connected in removable fashion to the handle (3) by means o£ the connecting joint (5) and which presents at least a blade (1); the Inter- changeable cartridge presenting, in addition, at least three shaving faces (8), which are distributed around a selection axis ( A), and which are each provided with at least a blade (7); the said connecting joint (5) permitting the selective rotation of the cartridge (6) around the said selection axis (A).

Description

MULTIBLADE SAFETY RAZOR

DESCRIPTION

The present invention relates to a multiblade

safety razor. In general, multiblade safety razors of a well- known type comprise a handle, a connecting joint which is arranged at an end of the handle, and a cartridge, which is connected in detachable fashion to the handle by means of the connecting joint, and which presents a number of blades which are grouped on a single shaving side, as is described in the international patent application No. WO 2004/073939, or on two opposing shaving sides_/ as is described in the American patent No. US3934338. The connecting joint comprises a snap or elastic grip element so that the cartridge may be rapidly and easily replaced once the blades have become blunt, and a release button which is suitable for expelling the cartridge from the grip element by disengaging it and distancing it from the grip element itself.

One of the disadvantages which users of the

razor of the kind which has been described above complain about most often is the need to always have

a series of extra cartridges on hand which have to be transported from place to place, as well as the fact

that the cartridge often becomes detached if the razor is not transported in its own packaging.

The aim of the present invention is to produce a multiblade safety razor whch wiil be free of the disadvantages which have been described above.

According , to the present invention, a multiblade saftey razor will be produced, comprising a handle, a connecting joint which is arranged at one end of the handle, and an inter-changeable cartridge, which is connected in removeable fashion to the handle by means of the connecting joint, and which presents a number of blades; the razor being characterised by the fact that the inter-changeable cartridge comprises at least three shaving faces, which are distributed around a selection axis, and which each present at least a blade; the said connecting joint permitting the selective rotation of

the cartridge around the said selection axis. The present invention will now be described with reference to the attached drawings, which illustrate a non-limiting form of embodiment of the present invention, and in which:

- FIGURE 1 is a perspectve view of a first preferred form of embodiment of a multiblade safety razor produced according to the present invention;

- FIGURE 2 is a perspective view, with some parts removed for reasons, of clarity, of a second preferred form of embodiment of the razor which is

shown in FIGURE 1;

- FIGURE 3 and FIGURE 4 are perspective views of respective preferred forms of embodiment of the razor which is shown in FIGURE 1;

- FIGURES 5a and 5b are perspective view of a fifth preferred form of embodiment of the razor which is shown in FIGURE 1;

- FIGURE 5c is a perspective view of a sixth preferred form of embodiment of the razor which is shown in FIGURE 1; - FIGURE 6 is a perpsective view of a seventh preferred form of embodiment of the razor which is shown in FIGURE 1;

- FIGURES 7a and 7b are perspective views of an

eighth preferred form of embodiment of the¹ razor which is shown in FIGURE 1;

- FIGURE 7c is a perspective view of a ninth preferred form of embodiment of the razor which is shown in FIGURE 1;

- FIGURES 8a and 8b are perspective views of a tenth preferred form of embodiment of the razor which is shown in FIGURE 1;

- FIGURES 9a and 9b are perspective views of an eleventh preferred form of embodiment of the razor

which is shown in FIGURE 1; - FIGURE 10a is a perspective view of a twelfth preferred form of embodiment of the razor which is shown in FIGURE 1;

FIGURE 10b is a perspective view of a thirteenth preferred form of embodiment of the razor which is shown in FIGURE 1;

- FIGURE 11 is a perspective view of a detail of a first preferred form of embodiment of a head for the razor according to any of the preceding drawings whatsoever/ - FIGURE 12 is a perspective view of a detail of a second preferred form of embodiment of a head for the razor according to any of the preceding drawings whatsoever;

- FIGURE 13 shows an axial section of a detail shown in FIGURE 12;

- FIGURE 14 shows, in axial section, a third preferred form of embodiment of a head for the razor according to any of the preceding drawings whatsoever;

- FIGURE 15 shows, in axial section, a fourth preferred form of embodiment of a head for the razor according to any of the preceding drawings whatsoever;

- FIGURE 16 shows, in axial section, a fifth preferred form of embodiment of a head for the razor according to any of the preceding drawings whatsoever;

- FIGURE 17 shows, in axial section, a sixth preferred form of embodiment of a head for the razor according to any of the preceding drawings whatsoever;

FIGURE 18 shows, in perspective view and axial section, a sixth preferred form of embodiment of a head for the razor according to any of the preceding drawings whatsoever;

FIGURE 19 shows, in perspective view and exploded view, a sixth preferred form of embodiment of a head for the razor according to any of the

preceding drawings whatsoever; - FIGURE 20 shows, in perspective view and with some parts removed for reasons of clarity, a detail of any of the heads whatsoever which are shown in the preceding drawings;

- FIGURE 21 shows, in perspective view and with some parts removed for reasons of clarity, a further detail of any of the heads whatsoever which are shown

in the preceding drawings.

With reference to FIGURE 1, the number 1 refers

to a multiblade safety razor in its entirety. The razor 1 comprises a handle 2 which is defined by a handgrip 3 and a head 4, a connecting joint 5 which is arranged in correspondence with the head 4, and an interchangeable cartridge 6, which is connected in detachable fashion to the head 4 by means of the joint 5, and which presents a number of cutting blades 7.

The cartridge 6 is defined by a prismatic body, and is provided with three shaving faces 8 which are distributed around a selection axis A as illustrated in FIGURE 1, or with four faces 8 as is illustrated in FIGURE 2, or with five faces 8 as is illustrated in FIGURES 3, 5 and 6, or with six faces 8 as is illustrated in FIGURE 4.

Each face 8 presents either a single blade 7 or a respective number of blades 7 which are arranged parallel in relation to each other, and defines with the two adjacent sides 8 two respective angles a the width of which varies in accordance with the Variation in the number of sides. As, in accordance with current regulations, the number of single surface cartridges 6 which are present in normal recharges which are currently on sale varies from 4 to 8, it is easily understandable that the opportunity of having a single cartridge 6 with a number of faces 8 which can vary from three to at least β is undoubtedly convenient in terms of use, and above all, in terms of transport.

With the aim of being able to easily replace the cartridge 6 once all the faces 8 have been used, ⁽ and also with the aim of being able to rotate the cartridge 6 around the axis A, as well as being able to block any eventual ■ involountary rotations of the

cartridge 6 itself, the connecting joint 5 comprises, as is illustrated in FIGURES 1, 3, 7a, 7b e 7c, an elastic claw 51 which is provided with respective end elements 52, which are snap engaged into the same number of respective opposing ends <ς>2 of the cartridge 6 permitting a selective rotation of the cartridge 6 around the selection axis A. In addition, the joint 5 comprises a blocking spout 54, which is coupled in sliding fashion to the head 4 as is illustrated in figures 1, 2, 3, 4, 7a, 7b, 7c, 8a e 8b, or which is engaged in rigid fashion to the head 4 itself as is illustrated in FIGURES 5 and β. The spout 54 presents a shape which complements at least each edge 56 which is produced by two adjacent shaving faces 8, and ^'and comprises two shells 55 which are connected to each other in flexible fashion. In the alternative preferred form of embodment of the razor 1 which is illustrated in FIGURES 1, 2, 3, 4, 7a, 7b, Ic, 8a and 8b, the two shells 55 diverge from each other at an angle which is equal to the size of an angle α, and they are each arranged in such a way as to abut a relative face 8 in order to block any undesirable rotation of the cartridge 6 around the axis A. While, however, in the form of embodiment of the razor 1 which is illustrated in FIGURES 1, 2, 3, 4, 5, 8a and 8b, the two shells 55 present a width along the axis A which is less than a width of the relative face 8 measured along the axis A in the alternative form of embodiment of the razor 1 which is shown in FIGURES 6 and 7, at least a shell 55 presents a width which is" equal to the width of the relative face 8 hence entirely covering the face 8 itself and therefore functioning as an anti-scratch element.

In addition, in the form of embodiment of the razor 1 which is illustrated in FIGURES 5a, 5b, and 5c, the spout 54 comprises, for each shell 55, two tongues 57, which define respective elongations of

the relative shells 55, are inclined in relation to the relative shell at an angle which is equal to^' the angle a, and may be conformed in continuous fashion, as is shown in FIGURES 5a and 5b, or in discontinuous fashion, as is shown in FIGURE 5c. In any case, the

tongues 57 touch on the faces 8 left free by the shells 55, and contribute further to the locking of

the cartridge 6. Still referring to the form of embodiment of the razor 1 which is shown in FIGURE 5, as the joint 5 is not provided with the elastic claw 51, hence avoiding any axial translation of the cartridge 6, the latter is provided with a ledge 62 for each edge 56 which is suitable for housing the portion of the spout 54 which is comprised between the two shells 55 or rather between each shell 55 and the relative tongue 57.

Instead, in the form of embodiment of the razor 1 which is shown in FIGURE 2, the spout 54 comprises only a single tongue 57 being one of the two shells 55 which is itself shaped in the form of a tongue. In

this case, the spout 54 interests three of the four shaving faces 8 of the cartridge 6, and can also present a width which is equal to the width of the cartridge 6 itself.

As has already been described, the spout 54 may be coupled in sliding fashion to the head 4, in such a case, as is shown in the form of embodiment of the razor 1 which is shown in FIGURES 1, 2, 3, 4, 7, and

8, it comprises a pin 54' which is inserted in

telescopic fashion inside the head 4 itself, and connected to the shells 55, and a button 54", which is integral with the pin 54' for the movement of the pin 54' itself, and is connected to the pin 54' by means of a slit 41 which is obtained in the head 4.

The slit 4i presents an elongated form in a directions which is transverse to the axis A, and permits the spout 54 to be moved along the axis A.

In the alternative form of embodiemnt of the razor 1 which is shown in FIGURE 6, the cartridge 6 comprises five shaving faces 8, and the spout 54 presents four shells 55, which are indicated with 55a, 55b, 55c, and 55d, of which the shells 55a and 55c are directly integral with the head 4, while the shell 55b is connected to the shell 55a, and the shell 55d is defined by a tongue which is connected to the shell 55c. In this way, as the width of the

shell 55 is equal to the width of the cartridge 6, only a shaving face 8 remains completely exposed to

the outside, while the other faces 8 are protected in such a way as to safeguard both the user and the blades 7 fron any eventual mishap. In the alternative form of embodiment of the razor 1 which is shown in FIGURES 9a and 9b, the spout 54 presents three shells 55, of which two, the shells 55a and 55b, are directly integral with the head 4, while the third shell, or rather the shell 55c, is connected to the shell • 55b, and forms with , the shells 55a and 55b itself and with two lateral shells 55d which are transverse to the axis A, a housing 6' for a Cartridge 6.

Also in this case, the presence of several shells' 55, guarantees both the safeguarding of the user, as well as the usable life of the blades 7 from

the side of the face 8 which are not used for shaving as these blades 7 are completely isolated from the outside. In the alternative form of embodiment of the razor 1 which is illustrated in FIGURES 8a and 8b,

the joint 5 comprises, instead of the elastic claw 51, a single shaped arm 51', which starts from a face of the head 4 and presents a prismatic support 51"

which is arranged along the axis A and is inserted inside the cartridge 6. In this form of embodiment, the spout 54 moves transverse to the axis A to act on the button 54" and goes to act on the cartridge 6 further blocking any axial movement of the cartridge 6 itself along the support 51".

In the alternative form of embodiment of the razor 1 which is shown in FIGURES 7a and 7b, the

cartridge 6 is maintained in position along the axis A by the claw 51, while two shells 55a and 55b function as protection for the faces 8 which are not

'• being used for shaving, and, at the same time, being integral with the pin 54' which is slidingly inserted inside the head 4 and activated by the button 54", also function as a hooking and unhooking element for the cartridge 6 itself.

In the alternative form of embodiment of the razor 1 which is illustrated in FIGURE 7c, instead, the two shells 55a and 55b which have just been described are integral with the head 4, while a third shell 55c faces the shell 55a and is mobile together with the pin 54' . The cartridge is maintained fixed in an axial direction by the claw 51, and the rotation of the cartridge 6 itself around the axis A when it is necessary to change a cutting face 8 by presenting a new one occurs by disengaging the shell 55c from the cartridge 6 itself, and by taking advantage of the substantial elasticity of the claw 51.

In the alternative form of embodiment of the razor 1 which is illustrated in FIGURE 11, the cartridge 6 comprises a core 64, which presents a polyhedral shape which is equivalent to the external shape of the cartridge 6 itself formed by the faces 8, and is connected to the faces 8 by means of the radial pillars 65.

The pillars 65 are arranged according to rows which are parallel to the axis A and which define together with the faces 8 and the core 64 a number of compartments 66, which are open towards the outside in correspondence with both the ends 62 of the cartridge 6 as well as through a respective slit 67 which is obtained along the relative face 8 in order to let out the cutting edge 7a of the blade 7 or the blades 7 in cases in which each face 8 is provided with one or more blades 7.

According to the number of blades 7 per each face 8, as well as according to the flexibility which

is desired to be imparted to each blade 7, the radial dimensions of the core 64 may be reduced, as is in fact illustrated in FIGURE 11, hence also permitting the anchorage of the cartridge 6 to razors 1 which

are provided with the claw 51 or alternatively with the arm 51', or, as is alternatively illustrated in FIGURE 12, may be broader in such a way as to reduce the radial dimensions of the compartments 66 as well as the radial extension of the blades 7.

In order to better explain that which has just been described, reference is now made to FIGURES 13 and 14, where two cartridges 6 are illustrated. More particularly, in FIGURE 13 is illustrated a cartridge 6 in which the radial dimension of the compartments 66 is very much reduced and is less than an internal radius of the core 64, while in FIGURE 14 is illustrated a cartridge 6 in which the radial dimension of the compartments 66 is very broad and is greater than an internal radius of the core 64.

In FIGURE 13, the, blades 7 of each face 8 are essentially very rigid, and develop substantially on

planes which are parallel to each other and are inclined in relation to the relative face 8.

In FIGURE 14, the blades 7 of each face 8 are essentially very elastic, and develop substantially on S-shaped planes in a section which is transverse to the axis A. In addition, in this case, the blades

7 are anchored to the core 64 and are practically free inside the relative compartments 66.

In the alternative forms of embodiment of the razor 1 which are illustrated in FIGURES 15, 16 and 17, the blades 7 develop substantially on L-shaped

planes in a section which is transverse to the axis A. In addition, in the alternative form of embodiment which is illustrated in FIGURE 15, the blades 7 are produced in a single piece with the core 64 and are made of the same material as the core 64 itself, preferably, but not necessarily, of PVC ,

While, in the alternative form of embodiment which is illustrated in FIGURE 16, the blades 7 present respective T-shaped bases 70 which are inserted into the same number of housings 71, which present a shape which is complementary to the bases 70, and are obtained parallel to the axis A in the core 64.

Instead, in the alternative form of embodiment which is illustrated in FIGURE Yl, the blades 7 still present respective T-shaped bases 70, but the core 64 comprises an external portion 64 ' and an internal portion 64" which are assembled to each other in such

a way as to block the bases 70 themselves. In particular, each portion 64' and 64" is defined by a polyhedron presenting a number of faces which are equal to the number of faces 8, and the portion 64" is inserted with an axial movement inside the portion 64" producing both the housings 71 and, thus, the

blocking of the bases 70 of the blades 7. Jn all the forms of embodiment which are illustrated in FIGURES 15, 16 and 17, each face 8 comprises a pair of blades 7, which are arranged adjacent to and parallel to each other, and the L- shaped conformation of which as described above defines for each blade 7 a respective edge 72 which is .suitable for conferring, according to its own positioning along the blade 7, a different rigidity to the blade 7 itself.

In addition, the edge 72 of the blade 7 arranged to the rear in the direction of shaving is inserted in free fashion inside a bump 73 delimiting a longitudinal face of the relative slit 67.

In the alternative form of embodiment of the razor 1 which is illustrated in FIGURE 18, each face 8 is subdivided by the relative slit 67 into an entry zone 8' and an exit zone 8" in relation to a cutting

direction D whch is substantially transverse to the axis A.

The exit zone 8" presents preferably, but not necessarily, a strip 81' of lubricating material which is suitable for making shaving easier, while the edge of the slit 67 which is opposite the border 73, or rather the border opposite the border against which the blade 7 which is arranged to the rear in the direction D leans during shaving, is covered with a protective rubber material.

In the form of embodiment which is illustrated in FIGURE 18, the blade 7 which is arranged to the rear in the direction D does not lean against the border 73 in correspondence with its own relative edge but leans against the border 73 substantially in correspondence with its own relative cutting edge 7a.

In addition, with the aim of facilitating the washing of the head, the entry zone 8' and the exit zone 8" are defined by respective , inclined planes which coincide with each other in such a way that the relative slit 67 extends through both the zones 8' and 8" in order to facilitate the exit of water from the compartments 66.

In the alternative form of embodiment of the razor 1 which is illustrated in FIGURE 19, the cartridge 6 comprises an external covering 85, which is defined by the number of faces 8, and which presents an end cover 86 which is arranged transverse to the axis A in order to close an end of the covering 85 itself.

The cartridge 6 also comprises a core 64, which is mounted in extractable fashion inside the covering

85 and which presents a number of tongues 87 which extend radially towards the outside of the core 64 itself.

The cover 86 is mounted in detachable fashion in the covering 85 and comprises an underframe 86' in order to ensure the mounting of the covering 85 itself, and a number of windows 88 for the passage of cleansing water. The tongues 87 all present an equal radial extension in order to maintain the core 64 at the same distance from each face 8 hence forming the compartments 66 which are suitable for facilitating the flow of the cleansing water inside the cartridge

6.

In the alternative form of embodiment of the razor 1 which is illustrated in FIGURE 10a, the cartridge 6 presents, in correspondence with each ledge 61, a threaded hole 81 and two housings 82 which are arranged beside the hole 81 along the same edge 56.

In this form of embodiment the pin 54' is threaded with a long thread 83 and, being integral with the pin 54, is inserted inside the hole 81 by screwing the cartridge 6 onto the pin 54' itself. The joint 5 comprises, in addition to the threaded pin 54', two elastic tongues 84, which are mobile in relation to the head 4 and are suitable for being snap inserted inside the housings 82. In fact, once the cartridge 6 has been screwed onto the thread 83, it is sufficient to push the tongues 84 by pushing on the button 54" in order to permit the snap insertion of the tongues 84 themselves inside the housings 82 thus guaranteeing the stability of the cartridge 6 during shaving.

In FIGURE 10b, instead, the thread 83 is replaced by a spherical head 83' which may be snap

inserted inside the hole 81 which is no longer threaded. The functioning of the cartridge 6 is identical to that which has just been described for FIGURE 10a.

FIGURE 20 illustrates a detail of a pair of

blades 7 from any of the above-described cartridges 6 whatsoever, and, in particular, shows that the two blades 7 present a number of pins 90 which are interposed between the blades 7 in order to maintain

the blades 7 at a determined distance from each other and, in addition, to confer a determined rigidity or flexibility on the blades 7 themselves. The pins 90 may be distributed in three rows 91 of which a central row 91a is equidistant from two side rows 91b, or, according to a form of embodiment which is not illustrated, but which is easily understandable from the foregoing description, may be uniformly distributed throughout the space which is comprised between the two adjacent blades 7.

Finally, still with the aim both of varying the mechanical characteristics of the blades 7, as well as of favouring the capacity of recirculating the cleansing water inside the cartridge 6, the blades 7, as alternatively illustrated in FIGURE 21, may be provided with a number of passing holes 95 which are to be determined on a case by case basis. It is intended that the present invention

should not be limited to the forms of embodiment which are herein described and illustrated, which are to be considered as examples of forms of embodiment of the multiblade safety razor, and which may instead be subject to further modifications relating to the shape and dispostion of its parts, as well as to

details pertaining to construction and assembly.

Claims

1. Multiblade security razor (1) comprising a handle (3) , a connecting joint (5) which is arranged at one end of the handle (3) , and an inter- changeable cartridge (6), which is connected in removeable fashion to the handle (3) by means of the connecting joint (5) , and which presents a number of

blades (7) ; the razor being characterised by the fact that the inter-changeable cartridge (6) comprises at least three shaving faces (8), which are distributed around a selection axis (A) , and which each present at least a blade (7) ; the said connecting joint (5) permitting the selective rotation of the cartridge (6) around the said selection axis (A) .

2. Multiblade razor according to Claim 1, characterised by the fact that the said connecting joint (5) comprises a blocking spout (54) presenting a shape which is complementary to an edge which is produced by two adjacent shaving faces (8) .

3. Multiblade razor according to Claim 2, characterised by the fact that the said blocking

spout (54) comprises two shells which are connected in flexible fashion to each other.

4. Multiblade razor according to Claim 3, characterised by the fact that at least one of the said two shells is also an anti-scratch shell which totally covers the relative shaving face (8) .

5. Multiblade razor according to Claim 4, characterised by the fact that the said blocking spout (54) is an integral part of the said handle (3) .

6. Multiblade razor according to Claim 4, characterised by the fact that the said blocking spout (54) is inserted in sliding fashion inside the said handle (3) .

7. Multiblade razor according to Claims 5 or 6, characterised by the fact that the said connecting joint (5) comprises an elastic claw which is provided with respective terminal elements which msy be snap inserted into respective matching opposite ends of the said cartridge (6) .

8. Multiblade razor according to Claims or 6, characterised by the fact that the said connecting joint (5) comprises a prismatic arm which may be internally engaged inside the said cartridge (6).

9. Multiblade razor according to any of the

preceding Claims whatsoever, characterised by the fact that the cartridge (6) comprises a polyhedral- shaped core (64) which is equivalent to the external shape of the cartridge ( 6).

10. Multiblade razor according to Claim 9, chartacterised by the fact that the cartridge (6) comprises a number of radial columns (65) for linking the said core (64) to the faces (8) themselves.

11. Multiblade razor according to Claims § or 10, characterised by the fact that the cartridge (6) comprises a number of inner compartments (66) which are equal in number to the number of faces (8) and which are open towards the outside in correspondence with both the ends (62) of the cartridge (6), as well as through a slit (67) which is obtained along the relative face (8) in order to permit the exit of a cutting edge (7a) of each blade (7) .

12. Multiblade razor according to Claim 11, characterised by the fact that a radial dimension of

the compartments (66) is less than an inner radius of the core (64) ; the blades (7) of each face (8) being developed substantially on parallel planes in relation to each other and inclined in relation to the relative face (8) .

13. Multiblade razor according to Claim 11, characterised by the fact that a radial dimension of the compartments (66) is greater than an inner radius

Of the core (64), the blades (7) of each face (8) developing substantially on S-shaped planes in a section which is transverse to the axis A.

14. Mutltiblade razor according to Claim 11, characterised by the fact that a radial dimension of the compartments (66) is greater than an inner radius of the core (64), the blades (7) of each face (8) developing substantially on L-shaped planes in a section which is transverse to the axis A.

15. Multiblade razor according to Claim 14,

characterised by the fact that the blades (7) are produced in a single piece with the core (64) and are made of the same material as the core (64) itself.

16. Multiblade razor according to Claim 14, characterised by the fact that the blades (7) present respective shaped bases (70) which are inserted in the same number of housings (71), which present a shape which is complementary to ttie bases (70), and which are obtained parallel to the axis (A) in the core (64) .

17, Mutliblade razor according to Claim 16, characterised by the fact that the core (64) is made in a single piece and the housings (71) are obtained through the core (64) itself.

18. Multiblade razor according to Claim 16, characterised by the fact that the core (64) comprises an external portion (64') and an internal portion (64") which may be assembled together in such a way as to block the bases (70) .

19. Multiblade razor according to Claim 18,

characterised by the fact that each of the said internal and external portions (64', 64") of the core (64) is defined by a polyhedron presenting a number of faces which are equal in number to the number of the faces (8) of the cartridge (6) .

20. Multiblade razor according to any of the preceding Claims from 14 to 19, characterised by the fact that each blade (7) comprises a respective edge

(72) which is suitable for conferring a different rigidity on the blade (7) in accordance with its own positioning along the blade (7) itself.

21. Multiblade razor according to Claim 20, characterised by the act that an edge (72) of the blade (7) of each couple of blades (7) is inserted in free fashion inside a bump (73) delimiting a longitudinal side of the relative slit (67) .

22. Multiblade razor according to any of the

preceding 'Claims whatsoever, characterised by the fact that each face (8) is subdivided into an entry zone (8') and an exit zone (8") in relation to a cutting direction (D), and presents a slit (67) for the exit of a cutting edge (7a) of the blades (7), the slit (67) separating the said two entry and exit

, zones (8' , 8") and facilitating the exit of water

from the cartridge (6) .

23. Multiblade razoraaccording to Claim 22, characterised by the fact that the said exit zone (8") comprises a strip (81') which is suitable for making shaving easier.

24. Multiblade razor according to anyy of the preceding Claims whatsoever, characterised by the

fact that the cartridge (6) comprises an openeable external casing ( (85) which is defined by the faces (8), and a core (64), which supports the blades (7) and is mounted in extractable fashion inside the casing (85) itself.

25. Multiblade razor according to Claim 24, characterised by the fact that the said casing (85) comprises, for each face (8), a respective slit (67)

so that the blades (7) of the relative face (8) may face the outside, and is laterally provided with a cover (86) which is arranged transverse to the axis (A) in order to close an end of the casing (85) itself.

26. Multiblade razor according to Claim 25, characterised by the fact that the said cartridge (6) comprises a number of spacers (87) which extend radially towards the outside of the core (64) in order to maintain the core (64) itself at a determined radial distance from the casing (85) .

27. Multiblade razor according to Claims 25 or 26, characterized by the, fact that the cover (86) is mounted in detachable fashion in the casing (85) and presents a number of windows (88) for the passage of cleaning water; each window (88) communicating

with at least a respective compartment (66) inside the cartridge (6) communicating with the outside of the cartridge (6) itself also by means of the said

slits (67) for the passage of cleaning water.

28. Multiblade razor according to any of the preceding Claims whatsoever, characterised by the fact that the said connecting joint (5) comprises, in correspondence with each edge (56) of the cartridge

(6), a hole (81) and two housings (82) arranged on

the face (8) of the hole (81) along the same edge (56) ; the connecting joint (5) comprising, in addition, a pin (54') which may be inserted inside the hole (81) and two mobile elastic tongues (84) which are transverse in relation to the axis (A) and in relation to the handle (3) in order ^'to be inserted inside the two housings (82) once the cartridge (6) has been coupled to the pin itself.

29. Multiblade razor according to Claim 28, characterised by the fact that the said pin (54') is threaded with a long thread and is inserted inside the hole (81) by means of screwing.

30. Multiblade razor according to Claim 28, characterised by the fact that the said pin (54' ) presents a spherical head (83' ) which may be snap- inserted inside the hole (81) .

31. Multiblade razor according to any of the preceding Claims whatsoever, characterised by the fact of comprising a number of spacing elements (90)

which are arranged between two adjacent blades (7) in order to maintain the blades (7) at a determined distance from one another and, in addition, to confer a determined rigidity or flexibility on the blades (7) themselves.

32. Multiblade razor according to any of the preceding Claims whatsoever, characterised by the

fact that the blades (7) comprise a number of passing holes (95) to encourage the recirculation of the

cleaning water inside the cartridge (6), as well as to vary the mechanical characteristics of the blades

(7) .

33. Interchangeable cartridge (6) for a multiblade razor as claimed in any of the preceding Claims whatsoever; the cartridge (6) comprising at least three shaving sides (8) and a n,umber of blades (7) which are distributed on each shaving face (8) .